• All-metal end ring seal design for maximum service life. The industry standard for over 75 years.
• Provides 300% greater lubricant capacity than o-ring style couplings.
• Greater lubricant capacity allows longer periods between scheduled lubrications and longer service life.
• Straight tooth design provides improved load distribution, lower stresses and longer life for the gear teeth.

Technical Specifications

Coupling Size	2
Outside Diameter (in)	7 in
Length Through Bore (in)	2.28125 in
Tooth Profile	Straight Faced Involute Hub tooth
Rating HP @ 100 RPM	50
Coupling Type	Gear Coupling
Fastener Quantity	10
Material	Medium Carbon Steel
Bore Type	Rough Bore
Bolt Type	Shrouded
Model Name	1-5-7_FR
Max Bore w/standard key for Flex Hub	2.125 in
Hub Diameter (in)	4.8125 in
Lube/Non-Lube	Lubricated
Torque Rating (in-lb)	31,500 in/lbs
Speed Max (rpm)	9,300 rpm
Compatible Bore Size Flex Hub [Min] (in)	0 in
Configuration	Flex Rigid
Torque [Max] (in-lb)	63,000 in/lbs
Style	FASTS
Measurement System	Imperial
Compatible Bore Size [Min] (in)	0 in
Overall Length (in)	4.875 in
Sleeve Type	Flanged
Fastener Size	3/8 x 1
Bore Size Max (in)	2.13 in

General Specifications

UPC	662384010206
Weight	29.74 LB